Question

英语小问题

只有must have been吗？没有must been吗？

Answer 1

对啊
只有must have been，没有must been，只有must be
情态动词后面要跟动词原形，
must have been 和 must be的区别在 have
have在这里表示是 动作已经完成。所以
must have been是对过去的事实的肯定猜测
must be是对现在事实的肯定猜测
e.g.
She sings so well.I think she must have been a singer.
她唱得真好。我想她以前肯定是名歌手。
he doesn't come to school today. He must be ill.
他今天没有来上学，肯定是病了。

Answer 2

记住，英语中没有must been，但有下面的表达：
1 must have been (doing / done)
----- She must have been here yesterday
------She must have been writing her book all the time
------She must have been asked to write her next book of the series HARRY PORTER.
2 must be (doing / done)
------ She must be famous as the author of HARRY PORTER
------She must be writing her book now
------She must be asked to write more books like HARRY PORTER.

Answer 3

情态动词后面要跟动词原形，因此must been是错误的。
must +动词原形
must be...
must have been...

Answer 4

have been是现在完成时态，直接用been的话，是表示be的现在分词

Answer 5

must是情态动词后面只能接动词原形所以不能must been.
must have been是一个固定搭配意为一定做了什么

Answer 6

没有，has，have加过去分词本就是一个固定结构
而且must是情态动词，肯定是加动词原形的~